Caffeine Driven is a three-person hackathon team: three college students who build at hackathons together. Winner of the Microsoft prize at ShellHacks 2026 with Repro.https://caffeine-driven.vercel.app/https://caffeine-driven.vercel.app/blog/we-won-the-microsoft-prize-at-shellhacks-2026/https://caffeine-driven.vercel.app/blog/we-won-the-microsoft-prize-at-shellhacks-2026/Repro, the project we built in 36 hours at ShellHacks 2026, won the Microsoft prize. Here is what it is and why we built it the way we did.Wed, 30 Sep 2026 00:00:00 GMTreproshellhackshttps://caffeine-driven.vercel.app/blog/how-repro-proves-a-bug-before-it-fixes-it/https://caffeine-driven.vercel.app/blog/how-repro-proves-a-bug-before-it-fixes-it/Reproduce first, verify after, and a person merges. A walk through the six stages of the Repro pipeline.Wed, 30 Sep 2026 00:00:00 GMTreproengineeringhttps://caffeine-driven.vercel.app/blog/finding-bugs-with-0-percent-of-our-model-tokens/https://caffeine-driven.vercel.app/blog/finding-bugs-with-0-percent-of-our-model-tokens/Repro spends none of its model tokens finding bugs and an estimated ~68% fewer tokens fixing them. Here is where those two numbers come from.Wed, 30 Sep 2026 00:00:00 GMTreproengineeringtokens